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Divisibility Tests for 11

Question 30In...

Question

Question 30

In the given question, fill in the blanks to make the statement true.

If a three-digit number abc is divisible by 11, then ___ is either 0 or multiple of 11.

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Solution

(a + c) - b
Since, abc is divisible by 11, the difference of sum of its digits at odd places and that of even places is either zero or multiple of 11, i.e. (a + c) - b is either zero or multiple of 11,

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Divisibility Tests for 11

Standard VI Mathematics

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